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@uiten tetes tat-trat @ffice J. W. CRARY, 0F PENSACOLA, FLORIDA..

Letters Patent No. 67,728, dated August 13, 1867.

IMPROVED BRICK MAGHINB.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, J. W. CRARY, of Pensacola, in the county ofEseambia, and State of Florida, have invented a new and improved BrickMachine; and that the following description, taken in connection withthe accompanying drawings, hereinafter referred to, forms a full andexact specication of the same, wherein I have set forth the nature andprinciples of1ny said improvements, by which my invention may bedistinguished. from all others 0f a similar class, together with suchparts as I claim and desire to have secured to me by Letters Patent. I'

This invention relates to certain new and useful improvements onra brickmachine, for which Letters Patent were granted to me bearing date August1T, 1858. l

The invention consists in a modification of the construction of theframing of the machine, as hereinafter fully shown and-described,whereby the device is rendered 4much more compact than hitherto, undV amore favorable arrangement of theworking parts obtained. The inventionalso consists in a novel arrangement for crushing or pulverizing theclay, consisting of two rollers, operating with dilerent degrees ofspeed, whereby a combined crushing and grinding action is obtained,which renders the opeiaton of the rollers very efficient. In theaccompanying sheet of druwings-- Figure 1 is a sido view of myinvention, the pulvcrizing or crushing device being shown in section.

Figure 2, a. transverse vertical section of the same, taken in the linex a, iig. 1.

"Figure, a vertical section of a portion of the same, taken in the liney y, iig. 2.

Similar letters of reference indicate like parts.

The frame A ofthe machine is constructed Vwith a semicircnlar top orupper part, a, as shown clearly in iig. 1; said part a conforming to theshape of the moulding-wheel B, which is substantially the same as shownand described in the original Letters Patent. '.lhc moulding-wheel isprovided with a series of moulds, b, which open towards a common centre,but have their sides straight or at right angles with the inner .face ofthe plungers C,'which form the bottoms of the moulds. -Thc samearrangement of pressing-roller D is employed as in the original machine,and infact the principle of the whole moulding und pressing operation issubstantially the same as that in the original machine, and therefore(locs not require a special description. The original machine, however,was exceedingly cumbersome; a rectangular frame being employed, and theconstruction and arrangement of parts such that the endlessdischarging-heit could not be carried or extended through themoulding-whcel.

By my improvementV it will be seen, by referring to iig. 2, that theendless belt E passes entirely through the moulding-wheel B, and withthe moulding-wlieel B and elevators F, may be driven by a very conv pactarrangement of gearing. 'lhe crushing or vpulvcrizing attachment iscomposed of two rollers G G', of equal diameter, over which a hopper,II, is placed to receive the clay, and conduct it to the rollers. Theserollers are connected at one end by gears I I, one of which, I, issmaller that the other, I', so that one roller will have a higher rateof speed than the other. Owing to this difference of spoed between thetwo rollers` a combined crushing and grinding action is obtained whichis very efficient in pulverizing the clay. By an equal rotating movementof the two rollers, a crushing action would only be obtained, but by adifferential movement a. combined crushing and grinding action isobtained. The pulver-ized clay is conveyed by an inclined spout, J, tothe elevators F, which conduct the clay as usual to the moulding-wheel.

-Having thus described my invention, I claim as new, and desire tosecure by Letters Patent- Constructing the frame A. with a semicirculartop, a, when said frame is used in connection with a moulding- Wheel, B,arranged concentric with the upper semicircular part of the frame,substantially as and for the purpose set forth.

J. W. CRARY.

Witnesses:

J. P. Pour, W. W. LATIMER.

